"A radio signal takes about 22 ½ hours to reach #Voyager 1, which is over 15 billion miles (24 billion kilometers) from Earth, and another 22 ½ hours for a signal to come back to Earth."
In 1977, I saw the launch of both Voyagers on television. It felt like pure sci-fi at the time. It feels fascinating now. 🌌 🔭 ✨
Add comment